From 25bc4c4ac7a189e2616d21ddbd42241853b0b3f9 Mon Sep 17 00:00:00 2001
From: Ross Wollman <rwoll@users.noreply.github.com>
Date: Tue, 21 Jun 2022 16:53:36 -0700
Subject: [PATCH] tests: async fallback handlers (#15027)

---
 tests/library/browsercontext-route.spec.ts | 21 +++++++++++++++++++++
 tests/page/page-request-fallback.spec.ts   | 21 +++++++++++++++++++++
 2 files changed, 42 insertions(+)

diff --git a/tests/library/browsercontext-route.spec.ts b/tests/library/browsercontext-route.spec.ts
index 8b7ae35a4e..80e0f7a020 100644
--- a/tests/library/browsercontext-route.spec.ts
+++ b/tests/library/browsercontext-route.spec.ts
@@ -330,3 +330,24 @@ it('should chain fallback into page', async ({ context, page, server }) => {
   await page.goto(server.EMPTY_PAGE);
   expect(intercepted).toEqual([6, 5, 4, 3, 2, 1]);
 });
+
+it('should fall back async', async ({ page, context, server }) => {
+  const intercepted = [];
+  await context.route('**/empty.html', async route => {
+    intercepted.push(1);
+    await new Promise(r => setTimeout(r, 100));
+    route.fallback();
+  });
+  await context.route('**/empty.html', async route => {
+    intercepted.push(2);
+    await new Promise(r => setTimeout(r, 100));
+    route.fallback();
+  });
+  await context.route('**/empty.html', async route => {
+    intercepted.push(3);
+    await new Promise(r => setTimeout(r, 100));
+    route.fallback();
+  });
+  await page.goto(server.EMPTY_PAGE);
+  expect(intercepted).toEqual([3, 2, 1]);
+});
diff --git a/tests/page/page-request-fallback.spec.ts b/tests/page/page-request-fallback.spec.ts
index 9b14617f7e..2e4093c641 100644
--- a/tests/page/page-request-fallback.spec.ts
+++ b/tests/page/page-request-fallback.spec.ts
@@ -40,6 +40,27 @@ it('should fall back', async ({ page, server }) => {
   expect(intercepted).toEqual([3, 2, 1]);
 });
 
+it('should fall back async', async ({ page, server }) => {
+  const intercepted = [];
+  await page.route('**/empty.html', async route => {
+    intercepted.push(1);
+    await new Promise(r => setTimeout(r, 100));
+    route.fallback();
+  });
+  await page.route('**/empty.html', async route => {
+    intercepted.push(2);
+    await new Promise(r => setTimeout(r, 100));
+    route.fallback();
+  });
+  await page.route('**/empty.html', async route => {
+    intercepted.push(3);
+    await new Promise(r => setTimeout(r, 100));
+    route.fallback();
+  });
+  await page.goto(server.EMPTY_PAGE);
+  expect(intercepted).toEqual([3, 2, 1]);
+});
+
 it('should not chain fulfill', async ({ page, server }) => {
   let failed = false;
   await page.route('**/empty.html', route => {